Ice Friction and Physics

Ice Friction and Physics By: Nathaniel Adams and Heather Morgan Two Types FAST ICE SLOW ICE Hard and Smooth Soft and Warm Is actually made out of salt water Made with 8 to 10 thin layers of water In all the ice is only 1 inch thick The zamboni is a machine that maintains the ice It cleans the ice It scrapes the ice and then lays another layer of warm water to freeze Three Types Figure Skates Figure skates have slightly longer blades in the back of the shoe to allow for tricks. Hockey Skates Hockey skates have shorter blades to allow for quick turning and faster stops. Speed Skates Speed skates have a lot longer blades to have more contact with the ice and to have maximum speed. To see if the coefficient of kinetic friction on ice would greatly differ if the two subjects had different masses. Our hypothesis was that the person with the most mass would have more kinetic friction. To do the experiment, we started skating at the same time and we stopped applying force at the same time. Theoretically the person with the less mass goes further with more time. The person with the most mass will go shorter with less time. After we had glided to a stop we measured the distance that we had coasted and the time that it had taken us to do it. After this data had been collected we tested a variety of shoes on the ice including, sneakers, flip flops, and dress shoes. The purpose of this was to prove that ice skates are the most efficient way to skate on ice. After we collected the data for the ice skates we calculated the deceleration for each trial. A=-2d/t2 We found that our hypothesis was proved wrong by our scientific investigation. Our data showed that even with the small mass difference between us that it didn’t affect the deceleration of the skates on the ice. Heather’s Average Deceleration: -0.17 m/s2 Nathaniel’s Average Deceleration: -0.17 m/s2 •Slick Tennis Shoes •Treaded Tennis Shoes •Flip Flops •Dress Shoes Greatest Amount of Deceleration: Slick Tennis Shoes Least Amount of Deceleration: Dress Shoes Http://www.britannica.com/eb/article?eu=42916&tocid=0 Http://www.exploatorium.edu/hockey/ice1.h tml “Physics on Ice” by Liz Woolard, Enloe High School, Raleigh, NC 27610 North Carolina State University Raleigh Ice Plex Rosemary Stallings Ashely Harris Burroughs Wellcome Fund University Towers Beth Snoke Liz Woolard Tya McGrue Nathan Black The Science of Sports Campers Luke Esposito Thanks for a great two weeks!!!!